Home / 28,500.34-39,330.60-15,579.88

Finding the Fourth Proportional to 28,500.34, 39,330.60 and 15,579.88

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Solution

The fourth proportional to 28,500.34, 39,330.60 and 15,579.88 is: 21,500.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,500.34 : 39,330.60 = 15,579.88 : x
  2. Step 2: Convert to fraction form
    28,500.34/39,330.60 = 15,579.88/x
  3. Step 3: Cross multiply
    28,500.34x = 39,330.60 × 15,579.88
  4. Step 4: Simplify right side
    28,500.34x = 612,766,028.33
  5. Step 5: Solve for x
    x = 612,766,028.33/28,500.34
  6. Step 6: Final answer
    x = 21,500.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.